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Notes on the Tribe Mesosini from Hainan with a New Species and New Records (Coleoptera, Cerambycidae, Lamiinae)

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Notes on the Tribe Mesosini from Hainan with a New Species and New Records (Coleoptera, Cerambycidae, Lamiinae) Elytra, Tokyo, New Series, 7 (1): 217–228 June 25, 2017 Notes on the Mesosini from Hainan 217 Notes on the Tribe Mesosini from Hainan with a New Species and New Records (Coleoptera, Cerambycidae, Lamiinae) 1) 2) 3)* Junsuke YAMASAKO , Bin LIU and Mei-Ying LIN 1) Department of General Systems Studies, Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3–8–1, Meguro, Tokyo, 153–8902 Japan 2) Bin Insect Taxonomy Studio, No.16, Xizhaosi Street, Dongcheng District, Beijing 100061, China 3) Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road, Chaoyang, Beijing 100101, China * Corresponding author: [email protected] Abstract Agelasta (Dissosira) helii YAMASAKO et LIU, sp. nov. is described from Hainan. Mesocacia punctifasciata GRESSITT, 1940 and Mesosa maculifemorata GRESSITT, 1940 are synonymized with Anancylus (Paranancylus) albofasciatus (PIC, 1925) and Mesosa (Aplocnemia) sparsenotata PIC, 1922, respectively. Cacia (Ipocregyes) cephalotes (PIC, 1925), Choeromorpha lineifrons (GRESSITT, 1951), comb. nov., Mesosa (Aplocnemia) latifasciata (WHITE, 1858), and Paragolsinda fruhstorferi BREUNING, 1956 are newly recorded from Hainan. Consequently, a total of 21 mesosine species are known from Hainan as shown in the appended list. Introduction In the catalogue of Palaearctic Cerambycidae (LÖBL & SMETANA, 2010), twelve species of the tribe Mesosini MULSANT, 1839 were listed for the fauna of Hainan Island. Since then, Paragolsinda tonkinensis (BREUNING, 1938), Spinipocregyes wenhsini BI, 2013, Golsinda basicornis GAHAN, 1894, Leptomesosa langana (PIC, 1917), and Mesoereis bifasciata (PIC, 1925) were added by YAMASAKO and N. OHBAYASHI (2011), BI (2013), and LIN et al. (2014). As a result, 17 species of the tribe has hitherto been known from Hainan. Recently, the second author collected one unknown species on this island. After close examination, we concluded that the species in question is new to the genus Agelas- ta NEWMAN, 1842. Furthermore, in the course of our survey on the Mesosini from Hainan, we recog- nized several taxonomic problems and new records. Herein, we describe a new species and newly re- cord six species with several taxonomic acts for solving taxonomic problems. Materials and methods This study was conducted based on the dry specimens deposited in the private collections of the first and second authors (CJY, BITS) and our colleagues, Li HE (CLH) and Ming JIN (CMJ), and also the following public collections: Institute of Zoology, Chinese Academy of Sciences, Beijing, China (IZAS), Musée des Confluences, Lyon, France (MHNL), Muséum National d'Histoire Naturelle, Par- is, France (MNHN), and Sun-Yat-sen University, Guangzhou, China (SYSU). Measurements of various body parts are coded as follows: LB = length of body, from the tip of vertex to elytral apex; LE = length of elytra, from the basal margin to the apex along the suture; LG = length of gena, from the upper margin to the lower margin; LL = length of lower eye lobe, from the upper margin to the lower margin; LP = length of pronotum, from the basal to the apical margin along 218 Junsuke YAMASAKO, Bin LIU and Mei-Ying LIN the suture; WB = maximum width across body; WEH = width across elytral humeri; WL = width of lower eye lobe near middle; WP = maximum width across pronotum. The observational method, terminology, and abbreviations of endophallus almost follow YAMA- SAKO and OHBAYASHI (2011), but use petrolatum jelly for inflating endophallus. The abbreviations for endophallus structures used in this paper are as follows: APH: apical phal- lomer; AS: sclerite of apical phallomer; BPH: basal phallomer; CS: crescent shaped sclerites; CT: cen- tral trunk; ED: ejaculatory duct; LSp: large spicules; MPH: median phallomer; MT: medial tube; PB: pre-apical bulb; SSp: small spicules. New Species Agelasta (Dissosira) helii YAMASAKO et LIU, sp. nov. (Figs. 1a–f, 3a–g) Mesosa yunnana (nec BREUNING, 1938): HUA et al., 1993: 128, 129, 256, 257, Pl. XVII, Fig. 243; HUA et al., 2009: 225, 367, Pl. XC, Fig. 1032. Type locality. China, Hainan, Ledong County, Jianfeng Town, Mt. Jianfengling, Mingfeng Val- ley, N18.74386/E108.84492, alt. 938 m ( 海南省乐东黎族自治县尖峰岭鸣凤谷 ). Type series. Holotype (IZAS: IOZ(E)1905373; Figs. 1a–c, 3a–g): ♂, Mingfeng Valley, Mt. Jian- fengling, Jianfeng Town, Ledong County, Hainan, China, 938 m, N18.74386/E108.84492, 20.V.2014, Bin LIU leg. Paratypes (same locality and collector as for the holotype except for six specimens collected in 2016): 2 ♂♂ (CJY, BITS), 949 m, N18.74397/E108.84486, 14.V.2014; 1 ♂ (CLH), 938 m, N18.74386/E108.84492, 15.V.2014; 1 ♀ (IZAS: IOZ(E) 1905375), 938 m, N18.74364/E108.84642, 15.V.2014; 1 ♂ (IZAS: IOZ(E) 1905482), 1 ♀ (IZAS: IOZ(E) 1905483), 943 m, N18.74383/ E108.84494, 15.V.2014; 2 ♂♂ (BITS), 938 m, N18.74386/E108.84492, 16.V.2014; 1 ♀ (IZAS: IOZ(E)1905374; Fig. 1d–f), 938 m, N18.74386/E108.84492, 16.V.2014; 1 ♂ (BITS), 1 ♀ (CJY), 938 m, N18.74386/E108.84492, 19.V.2014; 1 ♂ (IZAS: IOZ(E) 1905481), 938 m, N18.74364/ E108.84642, 21.V.2014; 1 ♂ (IZAS: IOZ(E) 1905484), 960 m, N18.74408/E108.84378, 23.V.2014; 2 ♀♀ (CJY, BITS), 960 m, N18.74408/E108.84378, 23.V.2014; 1 ♀ (CJY), 935 m, N18.74394/ E108.84478, 26.V.2014; 1 ♂ (CJY), 2 ♀♀ (BITS, CLH), 935 m, N18.74389/E108.84481, 3.VI.2014; 3 ♂♂, 3 ♀♀ (CMJ, same locality as for the holotype), 19–22.V.2016, Ming JIN leg. Description. M a l e (Fig. 1a–c, n = 6): LB = 13.1–15.9 mm, WB = 5.1–6.4 mm. Body black, dominantly with mingled reddish brown and white pubescence. Head with a pair of intermittent striae of dark brown pubescence on frons extending to occiput, and a pair of longitudinal bands of same pubescence behind upper eye lobes. Antenna with scape, pedicel and basal parts of an- tennomeres 3–4 with mingled reddish brown and white pubescence; antennomeres 5–11 with annula- tion of white pubescence on each base, but the basal annulations obviously reduced on antennomeres 5, 7, and 9, and the reminders clothed with brown pubescence. Pronotum scattered with sparse small spots of dark brown pubescence, and provided with two wide longitudinal bands of same pubescence on disk; side with wide band of same pubescence. Elytra with dark brown pubescence on each base of basal swelling and a part adjacent scutellum, the pubescence formed wide transverse dark brown band on basal 1/3, and sinuate one on apical 1/3 which sometimes becomes indistinct. Legs with femora provided with several spots of dark brown pubescence; tibiae with same pubescence on each basal 1/3 and apex, fringed with dark brown bristles along outer margin near apex; tarsonomeres 1–3 mostly Notes on the Mesosini from Hainan 219 Fig. 1. Habitus of Mesosini spp. from Hainan. —— a–f, Agelasta (Dissosira) helii YAMASAKO et LIU, sp. nov. (a–c, holotype, male; d–f, paratype, female); g–i, Choeromorpha lineifrons (GRESSITT, 1951), comb. nov. (male from Hainan); j–l, Paragolsinda fruhstorferi BREUNING, 1956 (male from Hainan). —— a, d, g, j, Dorsal view; b, e, h, k, lateral view; c, f, i, l, frontal view. covered with dark brown pubescence mingled with white one; craws with each basal part with white pubescence. Head with frons sparsely punctuated. Eye subdivided into upper and lower lobes which are con- nected posteriorly by narrow line; lower lobe transverse, LL/WL = 0.9, LL/LG = 0.7. Antennal tuber- cle hardly elevated. Antenna 1.4 times as long as body; relative length of each segment as follows: 1.4–1.5 : 0.2–0.3 : 1.9 : 1.3 : 0.9 : 0.8 : 0.7–0.8 : 0.7 : 0.6 : 0.6 : 0.6–0.7; scape slightly thickened api- cally, with developed cicatrix on apical outer side. Pronotum transverse, LP/WP = 0.7, WP/WEH = 0.8, weakly swollen above, slightly constricted at base, widest near middle, with obtuse tubercle on each side near apex and three indistinct tubercles on disk. Elytra moderate in length, LE/LB = 0.7, LE/WEH = 1.7, scattered with sparse punctures which are rough and distinct in basal part but reduced apically, provided with longitudinal obtuse swelling on each base near middle; sides straightly nar- rowed toward apical 1/4, arcuate toward rounded apex with subquadrate inner angle. Legs with meso- tibia without distal notch. Male genitalia (Fig. 3a–g, n = 2) with tegmen in dorsal view rhombic, widest near middle, gently 220 Junsuke YAMASAKO, Bin LIU and Mei-Ying LIN Fig. 2 Habitus and type materials of Mesosini spp. —— a, Cacia (Ipocregyes) cephalotes (PIC, 1925) (male from Hainan), b, Mesosa (Aplocnemia) latifasciata (WHITE, 1858) (female from Hainan); c–d, Falsoereis cephalotes PIC, 1925 (syntype and its labels, taken by YAMASAKO); e–f, Anagelasta lineifrons GRESSITT, 1951 (holotype and its labels, taken by BI & OHBAYASHI); g–h, Mesosa sparsenotata PIC, 1922 (syntype and its labels, taken by YAMASAKO); i–j, Mesosa maculifemorata GRESSITT, 1940 (holotype and its labels, taken by BI & OHBAYASHI); k–l, Ereis albofasciata PIC, 1925 (syntype and its labels, taken by TAGHAVIAN); m–n, Mesocacia punctifasciata GRESSITT, 1940 (holotype and its labels, taken by BI & OHBAYASHI). Notes on the Mesosini from Hainan 221 Fig. 3. Male genitalia of Agelasta (Dis- sosira) helii YAMASAKO et LIU, sp. nov. —— a–b, Tegmen; c, lateral lobe; d–e, median lobe, f, apex of median lobe; g, median lobe with endophallus. —— a, d, Dorsal view; b, e, g, lateral view; c, f, ven- tral view. Scale: 1.0 mm. curved in lateral view; paramere weakly constricted behind base, slightly dilated toward middle, gen- tly narrowed toward rounded apex, with short setae arisen from apical half on side, concentrated to- gether with long setae in apical 1/4; ringed part gently expanded laterally near middle of tegmen, straightly narrowed basally.
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